Anyway, yesterday, after carrying a heavy
footstool up a flight of stairs, my back started hurting - in the same spot as when I first injured it, the lumbar region - and then my left foot went numb all over the top and down to the big toe! It's still numb today, so I suppose it's been that way for over 24 hours now.
That's never happened before, not even when I've carried heavy things and made my back hurt from the old injury.